What are you running for shock absorbers ? Good, HD shocks will help curb the rebound of the diff/springs releasing tension. The stop hop bars relocate the upper control arm higher at the diff to give the suspension a better geometry to combat the hopping.
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Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
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